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Finding the Fourth Proportional to 630,624.48, 870,290.16 and 355,077.24

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Solution

The fourth proportional to 630,624.48, 870,290.16 and 355,077.24 is: 490,022.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,624.48 : 870,290.16 = 355,077.24 : x
  2. Step 2: Convert to fraction form
    630,624.48/870,290.16 = 355,077.24/x
  3. Step 3: Cross multiply
    630,624.48x = 870,290.16 × 355,077.24
  4. Step 4: Simplify right side
    630,624.48x = 309,020,228,011.96
  5. Step 5: Solve for x
    x = 309,020,228,011.96/630,624.48
  6. Step 6: Final answer
    x = 490,022.57

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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.