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Finding the Fourth Proportional to 384,128.40, 575,501.40 and 328,832.40

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Solution

The fourth proportional to 384,128.40, 575,501.40 and 328,832.40 is: 492,656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,128.40 : 575,501.40 = 328,832.40 : x
  2. Step 2: Convert to fraction form
    384,128.40/575,501.40 = 328,832.40/x
  3. Step 3: Cross multiply
    384,128.40x = 575,501.40 × 328,832.40
  4. Step 4: Simplify right side
    384,128.40x = 189,243,506,565.36
  5. Step 5: Solve for x
    x = 189,243,506,565.36/384,128.40
  6. Step 6: Final answer
    x = 492,656.90

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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.