Home / 630,708.72-870,245.04-401,182.56

Finding the Fourth Proportional to 630,708.72, 870,245.04 and 401,182.56

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Solution

The fourth proportional to 630,708.72, 870,245.04 and 401,182.56 is: 553,547.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,708.72 : 870,245.04 = 401,182.56 : x
  2. Step 2: Convert to fraction form
    630,708.72/870,245.04 = 401,182.56/x
  3. Step 3: Cross multiply
    630,708.72x = 870,245.04 × 401,182.56
  4. Step 4: Simplify right side
    630,708.72x = 349,127,132,974.50
  5. Step 5: Solve for x
    x = 349,127,132,974.50/630,708.72
  6. Step 6: Final answer
    x = 553,547.34

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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.