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Finding the Fourth Proportional to 660,037.92, 910,776.72 and 369,609

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Solution

The fourth proportional to 660,037.92, 910,776.72 and 369,609 is: 510,018.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,037.92 : 910,776.72 = 369,609 : x
  2. Step 2: Convert to fraction form
    660,037.92/910,776.72 = 369,609/x
  3. Step 3: Cross multiply
    660,037.92x = 910,776.72 × 369,609
  4. Step 4: Simplify right side
    660,037.92x = 336,631,272,702.48
  5. Step 5: Solve for x
    x = 336,631,272,702.48/660,037.92
  6. Step 6: Final answer
    x = 510,018.08

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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.