Home / 742,401.15-1,024,513.58-402,869.40

Finding the Fourth Proportional to 742,401.15, 1,024,513.58 and 402,869.40

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Solution

The fourth proportional to 742,401.15, 1,024,513.58 and 402,869.40 is: 555,959.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,401.15 : 1,024,513.58 = 402,869.40 : x
  2. Step 2: Convert to fraction form
    742,401.15/1,024,513.58 = 402,869.40/x
  3. Step 3: Cross multiply
    742,401.15x = 1,024,513.58 × 402,869.40
  4. Step 4: Simplify right side
    742,401.15x = 412,745,168,431.70
  5. Step 5: Solve for x
    x = 412,745,168,431.70/742,401.15
  6. Step 6: Final answer
    x = 555,959.77

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.