Home / 742,800.60-1,114,200.90-387,923.40

Finding the Fourth Proportional to 742,800.60, 1,114,200.90 and 387,923.40

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Solution

The fourth proportional to 742,800.60, 1,114,200.90 and 387,923.40 is: 581,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,800.60 : 1,114,200.90 = 387,923.40 : x
  2. Step 2: Convert to fraction form
    742,800.60/1,114,200.90 = 387,923.40/x
  3. Step 3: Cross multiply
    742,800.60x = 1,114,200.90 × 387,923.40
  4. Step 4: Simplify right side
    742,800.60x = 432,224,601,411.06
  5. Step 5: Solve for x
    x = 432,224,601,411.06/742,800.60
  6. Step 6: Final answer
    x = 581,885.10

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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.