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Finding the Fourth Proportional to 459,559.90, 689,901.45 and 260,019.10

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Solution

The fourth proportional to 459,559.90, 689,901.45 and 260,019.10 is: 390,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,559.90 : 689,901.45 = 260,019.10 : x
  2. Step 2: Convert to fraction form
    459,559.90/689,901.45 = 260,019.10/x
  3. Step 3: Cross multiply
    459,559.90x = 689,901.45 × 260,019.10
  4. Step 4: Simplify right side
    459,559.90x = 179,387,554,117.70
  5. Step 5: Solve for x
    x = 179,387,554,117.70/459,559.90
  6. Step 6: Final answer
    x = 390,346.40

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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.