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Finding the Fourth Proportional to 384,717.20, 577,075.80 and 366,346.40

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Solution

The fourth proportional to 384,717.20, 577,075.80 and 366,346.40 is: 549,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,717.20 : 577,075.80 = 366,346.40 : x
  2. Step 2: Convert to fraction form
    384,717.20/577,075.80 = 366,346.40/x
  3. Step 3: Cross multiply
    384,717.20x = 577,075.80 × 366,346.40
  4. Step 4: Simplify right side
    384,717.20x = 211,409,641,857.12
  5. Step 5: Solve for x
    x = 211,409,641,857.12/384,717.20
  6. Step 6: Final answer
    x = 549,519.60

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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.