Home / 717,502,036.70-990,152,823.10-387,477,175.70

Finding the Fourth Proportional to 717,502,036.70, 990,152,823.10 and 387,477,175.70

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Solution

The fourth proportional to 717,502,036.70, 990,152,823.10 and 387,477,175.70 is: 534,718,509.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,502,036.70 : 990,152,823.10 = 387,477,175.70 : x
  2. Step 2: Convert to fraction form
    717,502,036.70/990,152,823.10 = 387,477,175.70/x
  3. Step 3: Cross multiply
    717,502,036.70x = 990,152,823.10 × 387,477,175.70
  4. Step 4: Simplify right side
    717,502,036.70x = 383,661,619,406,169,728
  5. Step 5: Solve for x
    x = 383,661,619,406,169,728/717,502,036.70
  6. Step 6: Final answer
    x = 534,718,509.19

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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.