Home / 687,404.80-1,032,030.60-403,386.40

Finding the Fourth Proportional to 687,404.80, 1,032,030.60 and 403,386.40

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Solution

The fourth proportional to 687,404.80, 1,032,030.60 and 403,386.40 is: 605,621.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,404.80 : 1,032,030.60 = 403,386.40 : x
  2. Step 2: Convert to fraction form
    687,404.80/1,032,030.60 = 403,386.40/x
  3. Step 3: Cross multiply
    687,404.80x = 1,032,030.60 × 403,386.40
  4. Step 4: Simplify right side
    687,404.80x = 416,307,108,423.84
  5. Step 5: Solve for x
    x = 416,307,108,423.84/687,404.80
  6. Step 6: Final answer
    x = 605,621.47

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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.