Home / 742,421.46-1,024,535.60-402,889.70

Finding the Fourth Proportional to 742,421.46, 1,024,535.60 and 402,889.70

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Solution

The fourth proportional to 742,421.46, 1,024,535.60 and 402,889.70 is: 555,984.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,421.46 : 1,024,535.60 = 402,889.70 : x
  2. Step 2: Convert to fraction form
    742,421.46/1,024,535.60 = 402,889.70/x
  3. Step 3: Cross multiply
    742,421.46x = 1,024,535.60 × 402,889.70
  4. Step 4: Simplify right side
    742,421.46x = 412,774,840,523.32
  5. Step 5: Solve for x
    x = 412,774,840,523.32/742,421.46
  6. Step 6: Final answer
    x = 555,984.52

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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.