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Finding the Fourth Proportional to 586,430.90, 878,609.55 and 520,075.70

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Solution

The fourth proportional to 586,430.90, 878,609.55 and 520,075.70 is: 779,194.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,430.90 : 878,609.55 = 520,075.70 : x
  2. Step 2: Convert to fraction form
    586,430.90/878,609.55 = 520,075.70/x
  3. Step 3: Cross multiply
    586,430.90x = 878,609.55 × 520,075.70
  4. Step 4: Simplify right side
    586,430.90x = 456,943,476,742.94
  5. Step 5: Solve for x
    x = 456,943,476,742.94/586,430.90
  6. Step 6: Final answer
    x = 779,194.06

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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.