Home / 918,006,721.60-1,375,152,136.80-571,897,998.40

Finding the Fourth Proportional to 918,006,721.60, 1,375,152,136.80 and 571,897,998.40

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Solution

The fourth proportional to 918,006,721.60, 1,375,152,136.80 and 571,897,998.40 is: 856,689,538.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,006,721.60 : 1,375,152,136.80 = 571,897,998.40 : x
  2. Step 2: Convert to fraction form
    918,006,721.60/1,375,152,136.80 = 571,897,998.40/x
  3. Step 3: Cross multiply
    918,006,721.60x = 1,375,152,136.80 × 571,897,998.40
  4. Step 4: Simplify right side
    918,006,721.60x = 786,446,754,531,402,880
  5. Step 5: Solve for x
    x = 786,446,754,531,402,880/918,006,721.60
  6. Step 6: Final answer
    x = 856,689,538.35

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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.