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Finding the Fourth Proportional to 660,854.40, 991,281.60 and 626,737.20

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Solution

The fourth proportional to 660,854.40, 991,281.60 and 626,737.20 is: 940,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,854.40 : 991,281.60 = 626,737.20 : x
  2. Step 2: Convert to fraction form
    660,854.40/991,281.60 = 626,737.20/x
  3. Step 3: Cross multiply
    660,854.40x = 991,281.60 × 626,737.20
  4. Step 4: Simplify right side
    660,854.40x = 621,273,054,395.52
  5. Step 5: Solve for x
    x = 621,273,054,395.52/660,854.40
  6. Step 6: Final answer
    x = 940,105.80

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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.