Home / 717,551,020.80-1,076,326,531.20-390,183,364.80

Finding the Fourth Proportional to 717,551,020.80, 1,076,326,531.20 and 390,183,364.80

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Solution

The fourth proportional to 717,551,020.80, 1,076,326,531.20 and 390,183,364.80 is: 585,275,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,551,020.80 : 1,076,326,531.20 = 390,183,364.80 : x
  2. Step 2: Convert to fraction form
    717,551,020.80/1,076,326,531.20 = 390,183,364.80/x
  3. Step 3: Cross multiply
    717,551,020.80x = 1,076,326,531.20 × 390,183,364.80
  4. Step 4: Simplify right side
    717,551,020.80x = 419,964,707,567,128,192
  5. Step 5: Solve for x
    x = 419,964,707,567,128,192/717,551,020.80
  6. Step 6: Final answer
    x = 585,275,047.20

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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.