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Finding the Fourth Proportional to 478,284.17, 660,018.85 and 260,488.08

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Solution

The fourth proportional to 478,284.17, 660,018.85 and 260,488.08 is: 359,466.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,284.17 : 660,018.85 = 260,488.08 : x
  2. Step 2: Convert to fraction form
    478,284.17/660,018.85 = 260,488.08/x
  3. Step 3: Cross multiply
    478,284.17x = 660,018.85 × 260,488.08
  4. Step 4: Simplify right side
    478,284.17x = 171,927,040,850.85
  5. Step 5: Solve for x
    x = 171,927,040,850.85/478,284.17
  6. Step 6: Final answer
    x = 359,466.30

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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.