Home / 717,902,012.72-991,521,987.72-482,544,061.40

Finding the Fourth Proportional to 717,902,012.72, 991,521,987.72 and 482,544,061.40

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Solution

The fourth proportional to 717,902,012.72, 991,521,987.72 and 482,544,061.40 is: 666,460,099.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,902,012.72 : 991,521,987.72 = 482,544,061.40 : x
  2. Step 2: Convert to fraction form
    717,902,012.72/991,521,987.72 = 482,544,061.40/x
  3. Step 3: Cross multiply
    717,902,012.72x = 991,521,987.72 × 482,544,061.40
  4. Step 4: Simplify right side
    717,902,012.72x = 478,453,046,921,809,728
  5. Step 5: Solve for x
    x = 478,453,046,921,809,728/717,902,012.72
  6. Step 6: Final answer
    x = 666,460,099.63

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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.