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Finding the Fourth Proportional to 524,827.80, 786,075.30 and 431,515.80

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Solution

The fourth proportional to 524,827.80, 786,075.30 and 431,515.80 is: 646,314.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,827.80 : 786,075.30 = 431,515.80 : x
  2. Step 2: Convert to fraction form
    524,827.80/786,075.30 = 431,515.80/x
  3. Step 3: Cross multiply
    524,827.80x = 786,075.30 × 431,515.80
  4. Step 4: Simplify right side
    524,827.80x = 339,203,911,939.74
  5. Step 5: Solve for x
    x = 339,203,911,939.74/524,827.80
  6. Step 6: Final answer
    x = 646,314.68

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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.