Home / 1,076,828,705.80-1,615,243,058.70-921,860,510.20

Finding the Fourth Proportional to 1,076,828,705.80, 1,615,243,058.70 and 921,860,510.20

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Solution

The fourth proportional to 1,076,828,705.80, 1,615,243,058.70 and 921,860,510.20 is: 1,382,790,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076,828,705.80 : 1,615,243,058.70 = 921,860,510.20 : x
  2. Step 2: Convert to fraction form
    1,076,828,705.80/1,615,243,058.70 = 921,860,510.20/x
  3. Step 3: Cross multiply
    1,076,828,705.80x = 1,615,243,058.70 × 921,860,510.20
  4. Step 4: Simplify right side
    1,076,828,705.80x = 1,489,028,790,190,190,592
  5. Step 5: Solve for x
    x = 1,489,028,790,190,190,592/1,076,828,705.80
  6. Step 6: Final answer
    x = 1,382,790,765.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.