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Finding the Fourth Proportional to 539,551.72, 744,465.90 and 313,075.72

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Solution

The fourth proportional to 539,551.72, 744,465.90 and 313,075.72 is: 431,977.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,551.72 : 744,465.90 = 313,075.72 : x
  2. Step 2: Convert to fraction form
    539,551.72/744,465.90 = 313,075.72/x
  3. Step 3: Cross multiply
    539,551.72x = 744,465.90 × 313,075.72
  4. Step 4: Simplify right side
    539,551.72x = 233,074,197,657.95
  5. Step 5: Solve for x
    x = 233,074,197,657.95/539,551.72
  6. Step 6: Final answer
    x = 431,977.49

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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.