Home / 742,688.47-1,113,854.14-342,945.19

Finding the Fourth Proportional to 742,688.47, 1,113,854.14 and 342,945.19

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Solution

The fourth proportional to 742,688.47, 1,113,854.14 and 342,945.19 is: 514,335.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,688.47 : 1,113,854.14 = 342,945.19 : x
  2. Step 2: Convert to fraction form
    742,688.47/1,113,854.14 = 342,945.19/x
  3. Step 3: Cross multiply
    742,688.47x = 1,113,854.14 × 342,945.19
  4. Step 4: Simplify right side
    742,688.47x = 381,990,919,674.59
  5. Step 5: Solve for x
    x = 381,990,919,674.59/742,688.47
  6. Step 6: Final answer
    x = 514,335.33

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Double scale
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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.