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Finding the Fourth Proportional to 630,616.48, 870,269.34 and 344,155.12

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Solution

The fourth proportional to 630,616.48, 870,269.34 and 344,155.12 is: 474,944.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,616.48 : 870,269.34 = 344,155.12 : x
  2. Step 2: Convert to fraction form
    630,616.48/870,269.34 = 344,155.12/x
  3. Step 3: Cross multiply
    630,616.48x = 870,269.34 × 344,155.12
  4. Step 4: Simplify right side
    630,616.48x = 299,507,649,140.02
  5. Step 5: Solve for x
    x = 299,507,649,140.02/630,616.48
  6. Step 6: Final answer
    x = 474,944.22

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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.