Home / 898,678,859.40-1,348,018,289.10-381,021,208.20

Finding the Fourth Proportional to 898,678,859.40, 1,348,018,289.10 and 381,021,208.20

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Solution

The fourth proportional to 898,678,859.40, 1,348,018,289.10 and 381,021,208.20 is: 571,531,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,678,859.40 : 1,348,018,289.10 = 381,021,208.20 : x
  2. Step 2: Convert to fraction form
    898,678,859.40/1,348,018,289.10 = 381,021,208.20/x
  3. Step 3: Cross multiply
    898,678,859.40x = 1,348,018,289.10 × 381,021,208.20
  4. Step 4: Simplify right side
    898,678,859.40x = 513,623,557,188,578,816
  5. Step 5: Solve for x
    x = 513,623,557,188,578,816/898,678,859.40
  6. Step 6: Final answer
    x = 571,531,812.30

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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.