Home / 868,900,099.32-1,199,123,130.80-492,563,981.04

Finding the Fourth Proportional to 868,900,099.32, 1,199,123,130.80 and 492,563,981.04

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Solution

The fourth proportional to 868,900,099.32, 1,199,123,130.80 and 492,563,981.04 is: 679,761,532.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,900,099.32 : 1,199,123,130.80 = 492,563,981.04 : x
  2. Step 2: Convert to fraction form
    868,900,099.32/1,199,123,130.80 = 492,563,981.04/x
  3. Step 3: Cross multiply
    868,900,099.32x = 1,199,123,130.80 × 492,563,981.04
  4. Step 4: Simplify right side
    868,900,099.32x = 590,644,863,063,996,672
  5. Step 5: Solve for x
    x = 590,644,863,063,996,672/868,900,099.32
  6. Step 6: Final answer
    x = 679,761,532.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.