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Finding the Fourth Proportional to 630,601.39, 870,256.05 and 358,717.18

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Solution

The fourth proportional to 630,601.39, 870,256.05 and 358,717.18 is: 495,044.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,601.39 : 870,256.05 = 358,717.18 : x
  2. Step 2: Convert to fraction form
    630,601.39/870,256.05 = 358,717.18/x
  3. Step 3: Cross multiply
    630,601.39x = 870,256.05 × 358,717.18
  4. Step 4: Simplify right side
    630,601.39x = 312,175,796,133.94
  5. Step 5: Solve for x
    x = 312,175,796,133.94/630,601.39
  6. Step 6: Final answer
    x = 495,044.57

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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.