Home / 900,434,990.70-1,242,639,122.94-498,548,737.22

Finding the Fourth Proportional to 900,434,990.70, 1,242,639,122.94 and 498,548,737.22

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Solution

The fourth proportional to 900,434,990.70, 1,242,639,122.94 and 498,548,737.22 is: 688,018,759.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,434,990.70 : 1,242,639,122.94 = 498,548,737.22 : x
  2. Step 2: Convert to fraction form
    900,434,990.70/1,242,639,122.94 = 498,548,737.22/x
  3. Step 3: Cross multiply
    900,434,990.70x = 1,242,639,122.94 × 498,548,737.22
  4. Step 4: Simplify right side
    900,434,990.70x = 619,516,165,555,692,160
  5. Step 5: Solve for x
    x = 619,516,165,555,692,160/900,434,990.70
  6. Step 6: Final answer
    x = 688,018,759.77

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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.