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Finding the Fourth Proportional to 530,606.88, 732,678.30 and 492,143.22

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Solution

The fourth proportional to 530,606.88, 732,678.30 and 492,143.22 is: 679,566.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,606.88 : 732,678.30 = 492,143.22 : x
  2. Step 2: Convert to fraction form
    530,606.88/732,678.30 = 492,143.22/x
  3. Step 3: Cross multiply
    530,606.88x = 732,678.30 × 492,143.22
  4. Step 4: Simplify right side
    530,606.88x = 360,582,657,786.13
  5. Step 5: Solve for x
    x = 360,582,657,786.13/530,606.88
  6. Step 6: Final answer
    x = 679,566.50

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Double scale
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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.