Home / 646,677,681.60-970,016,522.40-319,310,025.60

Finding the Fourth Proportional to 646,677,681.60, 970,016,522.40 and 319,310,025.60

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Solution

The fourth proportional to 646,677,681.60, 970,016,522.40 and 319,310,025.60 is: 478,965,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,677,681.60 : 970,016,522.40 = 319,310,025.60 : x
  2. Step 2: Convert to fraction form
    646,677,681.60/970,016,522.40 = 319,310,025.60/x
  3. Step 3: Cross multiply
    646,677,681.60x = 970,016,522.40 × 319,310,025.60
  4. Step 4: Simplify right side
    646,677,681.60x = 309,736,000,599,966,976
  5. Step 5: Solve for x
    x = 309,736,000,599,966,976/646,677,681.60
  6. Step 6: Final answer
    x = 478,965,038.40

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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.