Home / 742,311.10-1,024,401.23-402,779.35

Finding the Fourth Proportional to 742,311.10, 1,024,401.23 and 402,779.35

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Solution

The fourth proportional to 742,311.10, 1,024,401.23 and 402,779.35 is: 555,841.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,311.10 : 1,024,401.23 = 402,779.35 : x
  2. Step 2: Convert to fraction form
    742,311.10/1,024,401.23 = 402,779.35/x
  3. Step 3: Cross multiply
    742,311.10x = 1,024,401.23 × 402,779.35
  4. Step 4: Simplify right side
    742,311.10x = 412,607,661,558.60
  5. Step 5: Solve for x
    x = 412,607,661,558.60/742,311.10
  6. Step 6: Final answer
    x = 555,841.97

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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.