Home / 742,422.41-1,024,543.58-402,890.66

Finding the Fourth Proportional to 742,422.41, 1,024,543.58 and 402,890.66

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Solution

The fourth proportional to 742,422.41, 1,024,543.58 and 402,890.66 is: 555,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,422.41 : 1,024,543.58 = 402,890.66 : x
  2. Step 2: Convert to fraction form
    742,422.41/1,024,543.58 = 402,890.66/x
  3. Step 3: Cross multiply
    742,422.41x = 1,024,543.58 × 402,890.66
  4. Step 4: Simplify right side
    742,422.41x = 412,779,039,144.96
  5. Step 5: Solve for x
    x = 412,779,039,144.96/742,422.41
  6. Step 6: Final answer
    x = 555,989.47

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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.