Home / 870,423.72-1,201,239.12-502,916.64

Finding the Fourth Proportional to 870,423.72, 1,201,239.12 and 502,916.64

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Solution

The fourth proportional to 870,423.72, 1,201,239.12 and 502,916.64 is: 694,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,423.72 : 1,201,239.12 = 502,916.64 : x
  2. Step 2: Convert to fraction form
    870,423.72/1,201,239.12 = 502,916.64/x
  3. Step 3: Cross multiply
    870,423.72x = 1,201,239.12 × 502,916.64
  4. Step 4: Simplify right side
    870,423.72x = 604,123,142,066.96
  5. Step 5: Solve for x
    x = 604,123,142,066.96/870,423.72
  6. Step 6: Final answer
    x = 694,056.39

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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.