Home / 915,129,721.36-1,245,984,046.32-912,224,067.76

Finding the Fourth Proportional to 915,129,721.36, 1,245,984,046.32 and 912,224,067.76

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Solution

The fourth proportional to 915,129,721.36, 1,245,984,046.32 and 912,224,067.76 is: 1,242,027,888.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,129,721.36 : 1,245,984,046.32 = 912,224,067.76 : x
  2. Step 2: Convert to fraction form
    915,129,721.36/1,245,984,046.32 = 912,224,067.76/x
  3. Step 3: Cross multiply
    915,129,721.36x = 1,245,984,046.32 × 912,224,067.76
  4. Step 4: Simplify right side
    915,129,721.36x = 1,136,616,635,098,094,592
  5. Step 5: Solve for x
    x = 1,136,616,635,098,094,592/915,129,721.36
  6. Step 6: Final answer
    x = 1,242,027,888.03

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.