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Finding the Fourth Proportional to 630,615.48, 870,267.96 and 344,154.12

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Solution

The fourth proportional to 630,615.48, 870,267.96 and 344,154.12 is: 474,942.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,615.48 : 870,267.96 = 344,154.12 : x
  2. Step 2: Convert to fraction form
    630,615.48/870,267.96 = 344,154.12/x
  3. Step 3: Cross multiply
    630,615.48x = 870,267.96 × 344,154.12
  4. Step 4: Simplify right side
    630,615.48x = 299,506,303,938.00
  5. Step 5: Solve for x
    x = 299,506,303,938.00/630,615.48
  6. Step 6: Final answer
    x = 474,942.84

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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.