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Finding the Fourth Proportional to 630,460.80, 870,001.56 and 358,491.96

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Solution

The fourth proportional to 630,460.80, 870,001.56 and 358,491.96 is: 494,699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,460.80 : 870,001.56 = 358,491.96 : x
  2. Step 2: Convert to fraction form
    630,460.80/870,001.56 = 358,491.96/x
  3. Step 3: Cross multiply
    630,460.80x = 870,001.56 × 358,491.96
  4. Step 4: Simplify right side
    630,460.80x = 311,888,564,447.46
  5. Step 5: Solve for x
    x = 311,888,564,447.46/630,460.80
  6. Step 6: Final answer
    x = 494,699.38

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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.