Home / 805,502.78-1,111,612.14-442,946.78

Finding the Fourth Proportional to 805,502.78, 1,111,612.14 and 442,946.78

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Solution

The fourth proportional to 805,502.78, 1,111,612.14 and 442,946.78 is: 611,276.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,502.78 : 1,111,612.14 = 442,946.78 : x
  2. Step 2: Convert to fraction form
    805,502.78/1,111,612.14 = 442,946.78/x
  3. Step 3: Cross multiply
    805,502.78x = 1,111,612.14 × 442,946.78
  4. Step 4: Simplify right side
    805,502.78x = 492,385,018,021.91
  5. Step 5: Solve for x
    x = 492,385,018,021.91/805,502.78
  6. Step 6: Final answer
    x = 611,276.62

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Double scale
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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.