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Finding the Fourth Proportional to 534,784.60, 802,176.90 and 385,485.40

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Solution

The fourth proportional to 534,784.60, 802,176.90 and 385,485.40 is: 578,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,784.60 : 802,176.90 = 385,485.40 : x
  2. Step 2: Convert to fraction form
    534,784.60/802,176.90 = 385,485.40/x
  3. Step 3: Cross multiply
    534,784.60x = 802,176.90 × 385,485.40
  4. Step 4: Simplify right side
    534,784.60x = 309,227,483,167.26
  5. Step 5: Solve for x
    x = 309,227,483,167.26/534,784.60
  6. Step 6: Final answer
    x = 578,228.10

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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.