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Finding the Fourth Proportional to 847,574.60, 1,169,854.73 and 485,207.87

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Solution

The fourth proportional to 847,574.60, 1,169,854.73 and 485,207.87 is: 669,702.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,574.60 : 1,169,854.73 = 485,207.87 : x
  2. Step 2: Convert to fraction form
    847,574.60/1,169,854.73 = 485,207.87/x
  3. Step 3: Cross multiply
    847,574.60x = 1,169,854.73 × 485,207.87
  4. Step 4: Simplify right side
    847,574.60x = 567,622,713,477.41
  5. Step 5: Solve for x
    x = 567,622,713,477.41/847,574.60
  6. Step 6: Final answer
    x = 669,702.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.