Home / 509,386.16-702,939-283,025.84

Finding the Fourth Proportional to 509,386.16, 702,939 and 283,025.84

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Solution

The fourth proportional to 509,386.16, 702,939 and 283,025.84 is: 390,567.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,386.16 : 702,939 = 283,025.84 : x
  2. Step 2: Convert to fraction form
    509,386.16/702,939 = 283,025.84/x
  3. Step 3: Cross multiply
    509,386.16x = 702,939 × 283,025.84
  4. Step 4: Simplify right side
    509,386.16x = 198,949,900,943.76
  5. Step 5: Solve for x
    x = 198,949,900,943.76/509,386.16
  6. Step 6: Final answer
    x = 390,567.94

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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.