Home / 840,118,291.20-1,258,161,897.60-408,792,902.40

Finding the Fourth Proportional to 840,118,291.20, 1,258,161,897.60 and 408,792,902.40

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Solution

The fourth proportional to 840,118,291.20, 1,258,161,897.60 and 408,792,902.40 is: 612,208,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,118,291.20 : 1,258,161,897.60 = 408,792,902.40 : x
  2. Step 2: Convert to fraction form
    840,118,291.20/1,258,161,897.60 = 408,792,902.40/x
  3. Step 3: Cross multiply
    840,118,291.20x = 1,258,161,897.60 × 408,792,902.40
  4. Step 4: Simplify right side
    840,118,291.20x = 514,327,653,808,995,520
  5. Step 5: Solve for x
    x = 514,327,653,808,995,520/840,118,291.20
  6. Step 6: Final answer
    x = 612,208,613.00

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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.