Home / 687,632.40-1,031,448.60-498,675.60

Finding the Fourth Proportional to 687,632.40, 1,031,448.60 and 498,675.60

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Solution

The fourth proportional to 687,632.40, 1,031,448.60 and 498,675.60 is: 748,013.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,632.40 : 1,031,448.60 = 498,675.60 : x
  2. Step 2: Convert to fraction form
    687,632.40/1,031,448.60 = 498,675.60/x
  3. Step 3: Cross multiply
    687,632.40x = 1,031,448.60 × 498,675.60
  4. Step 4: Simplify right side
    687,632.40x = 514,358,249,474.16
  5. Step 5: Solve for x
    x = 514,358,249,474.16/687,632.40
  6. Step 6: Final answer
    x = 748,013.40

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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.