Home / 630,632.48-870,301.20-355,085.24

Finding the Fourth Proportional to 630,632.48, 870,301.20 and 355,085.24

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Solution

The fourth proportional to 630,632.48, 870,301.20 and 355,085.24 is: 490,033.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,632.48 : 870,301.20 = 355,085.24 : x
  2. Step 2: Convert to fraction form
    630,632.48/870,301.20 = 355,085.24/x
  3. Step 3: Cross multiply
    630,632.48x = 870,301.20 × 355,085.24
  4. Step 4: Simplify right side
    630,632.48x = 309,031,110,474.29
  5. Step 5: Solve for x
    x = 309,031,110,474.29/630,632.48
  6. Step 6: Final answer
    x = 490,033.61

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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.