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Finding the Fourth Proportional to 659,841.40, 910,369.51 and 369,410.28

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Solution

The fourth proportional to 659,841.40, 910,369.51 and 369,410.28 is: 509,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,841.40 : 910,369.51 = 369,410.28 : x
  2. Step 2: Convert to fraction form
    659,841.40/910,369.51 = 369,410.28/x
  3. Step 3: Cross multiply
    659,841.40x = 910,369.51 × 369,410.28
  4. Step 4: Simplify right side
    659,841.40x = 336,299,849,193.66
  5. Step 5: Solve for x
    x = 336,299,849,193.66/659,841.40
  6. Step 6: Final answer
    x = 509,667.70

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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.