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Finding the Fourth Proportional to 614,117.70, 920,192.40 and 389,075.40

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Solution

The fourth proportional to 614,117.70, 920,192.40 and 389,075.40 is: 582,989.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,117.70 : 920,192.40 = 389,075.40 : x
  2. Step 2: Convert to fraction form
    614,117.70/920,192.40 = 389,075.40/x
  3. Step 3: Cross multiply
    614,117.70x = 920,192.40 × 389,075.40
  4. Step 4: Simplify right side
    614,117.70x = 358,024,226,106.96
  5. Step 5: Solve for x
    x = 358,024,226,106.96/614,117.70
  6. Step 6: Final answer
    x = 582,989.59

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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.