Home / 630,728.48-870,272.04-401,202.20

Finding the Fourth Proportional to 630,728.48, 870,272.04 and 401,202.20

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Solution

The fourth proportional to 630,728.48, 870,272.04 and 401,202.20 is: 553,574.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,728.48 : 870,272.04 = 401,202.20 : x
  2. Step 2: Convert to fraction form
    630,728.48/870,272.04 = 401,202.20/x
  3. Step 3: Cross multiply
    630,728.48x = 870,272.04 × 401,202.20
  4. Step 4: Simplify right side
    630,728.48x = 349,155,057,046.49
  5. Step 5: Solve for x
    x = 349,155,057,046.49/630,728.48
  6. Step 6: Final answer
    x = 553,574.27

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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.