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Finding the Fourth Proportional to 630,644.10, 870,309.22 and 358,705.02

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Solution

The fourth proportional to 630,644.10, 870,309.22 and 358,705.02 is: 495,024.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,644.10 : 870,309.22 = 358,705.02 : x
  2. Step 2: Convert to fraction form
    630,644.10/870,309.22 = 358,705.02/x
  3. Step 3: Cross multiply
    630,644.10x = 870,309.22 × 358,705.02
  4. Step 4: Simplify right side
    630,644.10x = 312,184,286,166.28
  5. Step 5: Solve for x
    x = 312,184,286,166.28/630,644.10
  6. Step 6: Final answer
    x = 495,024.51

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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.