Home / 872,140.60-1,308,210.90-573,542.20

Finding the Fourth Proportional to 872,140.60, 1,308,210.90 and 573,542.20

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Solution

The fourth proportional to 872,140.60, 1,308,210.90 and 573,542.20 is: 860,313.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,140.60 : 1,308,210.90 = 573,542.20 : x
  2. Step 2: Convert to fraction form
    872,140.60/1,308,210.90 = 573,542.20/x
  3. Step 3: Cross multiply
    872,140.60x = 1,308,210.90 × 573,542.20
  4. Step 4: Simplify right side
    872,140.60x = 750,314,157,649.98
  5. Step 5: Solve for x
    x = 750,314,157,649.98/872,140.60
  6. Step 6: Final answer
    x = 860,313.30

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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.