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Finding the Fourth Proportional to 586,547.12, 809,432.16 and 318,275.12

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Solution

The fourth proportional to 586,547.12, 809,432.16 and 318,275.12 is: 439,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,547.12 : 809,432.16 = 318,275.12 : x
  2. Step 2: Convert to fraction form
    586,547.12/809,432.16 = 318,275.12/x
  3. Step 3: Cross multiply
    586,547.12x = 809,432.16 × 318,275.12
  4. Step 4: Simplify right side
    586,547.12x = 257,622,113,808.70
  5. Step 5: Solve for x
    x = 257,622,113,808.70/586,547.12
  6. Step 6: Final answer
    x = 439,218.11

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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.