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Finding the Fourth Proportional to 630,885.42, 870,625.43 and 358,953.32

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Solution

The fourth proportional to 630,885.42, 870,625.43 and 358,953.32 is: 495,357.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,885.42 : 870,625.43 = 358,953.32 : x
  2. Step 2: Convert to fraction form
    630,885.42/870,625.43 = 358,953.32/x
  3. Step 3: Cross multiply
    630,885.42x = 870,625.43 × 358,953.32
  4. Step 4: Simplify right side
    630,885.42x = 312,513,882,427.03
  5. Step 5: Solve for x
    x = 312,513,882,427.03/630,885.42
  6. Step 6: Final answer
    x = 495,357.59

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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.