Home / 985,805.40-1,478,708.10-631,511.40

Finding the Fourth Proportional to 985,805.40, 1,478,708.10 and 631,511.40

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Solution

The fourth proportional to 985,805.40, 1,478,708.10 and 631,511.40 is: 947,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,805.40 : 1,478,708.10 = 631,511.40 : x
  2. Step 2: Convert to fraction form
    985,805.40/1,478,708.10 = 631,511.40/x
  3. Step 3: Cross multiply
    985,805.40x = 1,478,708.10 × 631,511.40
  4. Step 4: Simplify right side
    985,805.40x = 933,821,022,422.34
  5. Step 5: Solve for x
    x = 933,821,022,422.34/985,805.40
  6. Step 6: Final answer
    x = 947,267.10

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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.