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Finding the Fourth Proportional to 646,673,607.60, 970,010,411.40 and 319,305,951.60

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Solution

The fourth proportional to 646,673,607.60, 970,010,411.40 and 319,305,951.60 is: 478,958,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,673,607.60 : 970,010,411.40 = 319,305,951.60 : x
  2. Step 2: Convert to fraction form
    646,673,607.60/970,010,411.40 = 319,305,951.60/x
  3. Step 3: Cross multiply
    646,673,607.60x = 970,010,411.40 × 319,305,951.60
  4. Step 4: Simplify right side
    646,673,607.60x = 309,730,097,473,984,512
  5. Step 5: Solve for x
    x = 309,730,097,473,984,512/646,673,607.60
  6. Step 6: Final answer
    x = 478,958,927.40

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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.