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Finding the Fourth Proportional to 472,606.80, 708,910.20 and 260,030.40

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Solution

The fourth proportional to 472,606.80, 708,910.20 and 260,030.40 is: 390,045.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,606.80 : 708,910.20 = 260,030.40 : x
  2. Step 2: Convert to fraction form
    472,606.80/708,910.20 = 260,030.40/x
  3. Step 3: Cross multiply
    472,606.80x = 708,910.20 × 260,030.40
  4. Step 4: Simplify right side
    472,606.80x = 184,338,202,870.08
  5. Step 5: Solve for x
    x = 184,338,202,870.08/472,606.80
  6. Step 6: Final answer
    x = 390,045.60

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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.