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Finding the Fourth Proportional to 630,933.48, 870,585.39 and 372,774.78

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Solution

The fourth proportional to 630,933.48, 870,585.39 and 372,774.78 is: 514,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,933.48 : 870,585.39 = 372,774.78 : x
  2. Step 2: Convert to fraction form
    630,933.48/870,585.39 = 372,774.78/x
  3. Step 3: Cross multiply
    630,933.48x = 870,585.39 × 372,774.78
  4. Step 4: Simplify right side
    630,933.48x = 324,532,277,228.46
  5. Step 5: Solve for x
    x = 324,532,277,228.46/630,933.48
  6. Step 6: Final answer
    x = 514,368.45

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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.