Home / 385,625.20-578,437.80-346,356.40

Finding the Fourth Proportional to 385,625.20, 578,437.80 and 346,356.40

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Solution

The fourth proportional to 385,625.20, 578,437.80 and 346,356.40 is: 519,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,625.20 : 578,437.80 = 346,356.40 : x
  2. Step 2: Convert to fraction form
    385,625.20/578,437.80 = 346,356.40/x
  3. Step 3: Cross multiply
    385,625.20x = 578,437.80 × 346,356.40
  4. Step 4: Simplify right side
    385,625.20x = 200,345,634,031.92
  5. Step 5: Solve for x
    x = 200,345,634,031.92/385,625.20
  6. Step 6: Final answer
    x = 519,534.60

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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.