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Finding the Fourth Proportional to 885,953.60, 1,329,124.80 and 286,812.80

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Solution

The fourth proportional to 885,953.60, 1,329,124.80 and 286,812.80 is: 430,282.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,953.60 : 1,329,124.80 = 286,812.80 : x
  2. Step 2: Convert to fraction form
    885,953.60/1,329,124.80 = 286,812.80/x
  3. Step 3: Cross multiply
    885,953.60x = 1,329,124.80 × 286,812.80
  4. Step 4: Simplify right side
    885,953.60x = 381,210,005,437.44
  5. Step 5: Solve for x
    x = 381,210,005,437.44/885,953.60
  6. Step 6: Final answer
    x = 430,282.13

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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.