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Finding the Fourth Proportional to 478,670.80, 660,554.33 and 260,886.36

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Solution

The fourth proportional to 478,670.80, 660,554.33 and 260,886.36 is: 360,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,670.80 : 660,554.33 = 260,886.36 : x
  2. Step 2: Convert to fraction form
    478,670.80/660,554.33 = 260,886.36/x
  3. Step 3: Cross multiply
    478,670.80x = 660,554.33 × 260,886.36
  4. Step 4: Simplify right side
    478,670.80x = 172,329,614,735.94
  5. Step 5: Solve for x
    x = 172,329,614,735.94/478,670.80
  6. Step 6: Final answer
    x = 360,016.98

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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.