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Finding the Fourth Proportional to 693,483.92, 957,075.72 and 421,531.28

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Solution

The fourth proportional to 693,483.92, 957,075.72 and 421,531.28 is: 581,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,483.92 : 957,075.72 = 421,531.28 : x
  2. Step 2: Convert to fraction form
    693,483.92/957,075.72 = 421,531.28/x
  3. Step 3: Cross multiply
    693,483.92x = 957,075.72 × 421,531.28
  4. Step 4: Simplify right side
    693,483.92x = 403,437,353,308.52
  5. Step 5: Solve for x
    x = 403,437,353,308.52/693,483.92
  6. Step 6: Final answer
    x = 581,754.45

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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.