Home / 385,365.20-578,047.80-346,096.40

Finding the Fourth Proportional to 385,365.20, 578,047.80 and 346,096.40

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Solution

The fourth proportional to 385,365.20, 578,047.80 and 346,096.40 is: 519,144.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,365.20 : 578,047.80 = 346,096.40 : x
  2. Step 2: Convert to fraction form
    385,365.20/578,047.80 = 346,096.40/x
  3. Step 3: Cross multiply
    385,365.20x = 578,047.80 × 346,096.40
  4. Step 4: Simplify right side
    385,365.20x = 200,060,262,607.92
  5. Step 5: Solve for x
    x = 200,060,262,607.92/385,365.20
  6. Step 6: Final answer
    x = 519,144.60

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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.