Home / 912,358.84-1,259,023.32-498,905.20

Finding the Fourth Proportional to 912,358.84, 1,259,023.32 and 498,905.20

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Solution

The fourth proportional to 912,358.84, 1,259,023.32 and 498,905.20 is: 688,471.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,358.84 : 1,259,023.32 = 498,905.20 : x
  2. Step 2: Convert to fraction form
    912,358.84/1,259,023.32 = 498,905.20/x
  3. Step 3: Cross multiply
    912,358.84x = 1,259,023.32 × 498,905.20
  4. Step 4: Simplify right side
    912,358.84x = 628,133,281,269.26
  5. Step 5: Solve for x
    x = 628,133,281,269.26/912,358.84
  6. Step 6: Final answer
    x = 688,471.74

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Double scale
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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.