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Finding the Fourth Proportional to 628,585.80, 942,878.70 and 565,600.20

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Solution

The fourth proportional to 628,585.80, 942,878.70 and 565,600.20 is: 848,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,585.80 : 942,878.70 = 565,600.20 : x
  2. Step 2: Convert to fraction form
    628,585.80/942,878.70 = 565,600.20/x
  3. Step 3: Cross multiply
    628,585.80x = 942,878.70 × 565,600.20
  4. Step 4: Simplify right side
    628,585.80x = 533,292,381,295.74
  5. Step 5: Solve for x
    x = 533,292,381,295.74/628,585.80
  6. Step 6: Final answer
    x = 848,400.30

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Double scale
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Similar ratio
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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.