Home / 885,328.79-1,221,601.40-498,090.36

Finding the Fourth Proportional to 885,328.79, 1,221,601.40 and 498,090.36

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Solution

The fourth proportional to 885,328.79, 1,221,601.40 and 498,090.36 is: 687,279.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,328.79 : 1,221,601.40 = 498,090.36 : x
  2. Step 2: Convert to fraction form
    885,328.79/1,221,601.40 = 498,090.36/x
  3. Step 3: Cross multiply
    885,328.79x = 1,221,601.40 × 498,090.36
  4. Step 4: Simplify right side
    885,328.79x = 608,467,885,060.90
  5. Step 5: Solve for x
    x = 608,467,885,060.90/885,328.79
  6. Step 6: Final answer
    x = 687,279.00

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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.