Home / 858,806,472.60-1,288,209,708.90-725,780,885.40

Finding the Fourth Proportional to 858,806,472.60, 1,288,209,708.90 and 725,780,885.40

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Solution

The fourth proportional to 858,806,472.60, 1,288,209,708.90 and 725,780,885.40 is: 1,088,671,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,806,472.60 : 1,288,209,708.90 = 725,780,885.40 : x
  2. Step 2: Convert to fraction form
    858,806,472.60/1,288,209,708.90 = 725,780,885.40/x
  3. Step 3: Cross multiply
    858,806,472.60x = 1,288,209,708.90 × 725,780,885.40
  4. Step 4: Simplify right side
    858,806,472.60x = 934,957,983,106,318,336
  5. Step 5: Solve for x
    x = 934,957,983,106,318,336/858,806,472.60
  6. Step 6: Final answer
    x = 1,088,671,328.10

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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.