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Finding the Fourth Proportional to 586,421.80, 878,466.30 and 544,431.40

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Solution

The fourth proportional to 586,421.80, 878,466.30 and 544,431.40 is: 815,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,421.80 : 878,466.30 = 544,431.40 : x
  2. Step 2: Convert to fraction form
    586,421.80/878,466.30 = 544,431.40/x
  3. Step 3: Cross multiply
    586,421.80x = 878,466.30 × 544,431.40
  4. Step 4: Simplify right side
    586,421.80x = 478,264,637,561.82
  5. Step 5: Solve for x
    x = 478,264,637,561.82/586,421.80
  6. Step 6: Final answer
    x = 815,564.22

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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.