Home / 662,117.04-913,647.08-390,167.28

Finding the Fourth Proportional to 662,117.04, 913,647.08 and 390,167.28

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Solution

The fourth proportional to 662,117.04, 913,647.08 and 390,167.28 is: 538,386.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,117.04 : 913,647.08 = 390,167.28 : x
  2. Step 2: Convert to fraction form
    662,117.04/913,647.08 = 390,167.28/x
  3. Step 3: Cross multiply
    662,117.04x = 913,647.08 × 390,167.28
  4. Step 4: Simplify right side
    662,117.04x = 356,475,196,083.54
  5. Step 5: Solve for x
    x = 356,475,196,083.54/662,117.04
  6. Step 6: Final answer
    x = 538,386.98

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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.