Home / 489,902,946.40-734,854,419.60-217,805,154.40

Finding the Fourth Proportional to 489,902,946.40, 734,854,419.60 and 217,805,154.40

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Solution

The fourth proportional to 489,902,946.40, 734,854,419.60 and 217,805,154.40 is: 326,707,731.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,902,946.40 : 734,854,419.60 = 217,805,154.40 : x
  2. Step 2: Convert to fraction form
    489,902,946.40/734,854,419.60 = 217,805,154.40/x
  3. Step 3: Cross multiply
    489,902,946.40x = 734,854,419.60 × 217,805,154.40
  4. Step 4: Simplify right side
    489,902,946.40x = 160,055,080,322,500,384
  5. Step 5: Solve for x
    x = 160,055,080,322,500,384/489,902,946.40
  6. Step 6: Final answer
    x = 326,707,731.60

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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.