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Finding the Fourth Proportional to 590,643.60, 885,965.40 and 432,013.20

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Solution

The fourth proportional to 590,643.60, 885,965.40 and 432,013.20 is: 648,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,643.60 : 885,965.40 = 432,013.20 : x
  2. Step 2: Convert to fraction form
    590,643.60/885,965.40 = 432,013.20/x
  3. Step 3: Cross multiply
    590,643.60x = 885,965.40 × 432,013.20
  4. Step 4: Simplify right side
    590,643.60x = 382,748,747,543.28
  5. Step 5: Solve for x
    x = 382,748,747,543.28/590,643.60
  6. Step 6: Final answer
    x = 648,019.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.