Home / 1,438,527,728.53-1,985,160,966.92-778,478,006.53

Finding the Fourth Proportional to 1,438,527,728.53, 1,985,160,966.92 and 778,478,006.53

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Solution

The fourth proportional to 1,438,527,728.53, 1,985,160,966.92 and 778,478,006.53 is: 1,074,295,699.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,527,728.53 : 1,985,160,966.92 = 778,478,006.53 : x
  2. Step 2: Convert to fraction form
    1,438,527,728.53/1,985,160,966.92 = 778,478,006.53/x
  3. Step 3: Cross multiply
    1,438,527,728.53x = 1,985,160,966.92 × 778,478,006.53
  4. Step 4: Simplify right side
    1,438,527,728.53x = 1,545,404,152,169,048,832
  5. Step 5: Solve for x
    x = 1,545,404,152,169,048,832/1,438,527,728.53
  6. Step 6: Final answer
    x = 1,074,295,699.36

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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.