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Finding the Fourth Proportional to 630,660.96, 870,313.68 and 358,722.72

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Solution

The fourth proportional to 630,660.96, 870,313.68 and 358,722.72 is: 495,038.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,660.96 : 870,313.68 = 358,722.72 : x
  2. Step 2: Convert to fraction form
    630,660.96/870,313.68 = 358,722.72/x
  3. Step 3: Cross multiply
    630,660.96x = 870,313.68 × 358,722.72
  4. Step 4: Simplify right side
    630,660.96x = 312,201,290,542.81
  5. Step 5: Solve for x
    x = 312,201,290,542.81/630,660.96
  6. Step 6: Final answer
    x = 495,038.24

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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.