Home / 646,578.90-970,905.15-437,145.30

Finding the Fourth Proportional to 646,578.90, 970,905.15 and 437,145.30

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Solution

The fourth proportional to 646,578.90, 970,905.15 and 437,145.30 is: 656,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,578.90 : 970,905.15 = 437,145.30 : x
  2. Step 2: Convert to fraction form
    646,578.90/970,905.15 = 437,145.30/x
  3. Step 3: Cross multiply
    646,578.90x = 970,905.15 × 437,145.30
  4. Step 4: Simplify right side
    646,578.90x = 424,426,623,068.30
  5. Step 5: Solve for x
    x = 424,426,623,068.30/646,578.90
  6. Step 6: Final answer
    x = 656,418.92

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Double scale
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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.