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Finding the Fourth Proportional to 495,518.80, 742,403.40 and 406,289.20

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Solution

The fourth proportional to 495,518.80, 742,403.40 and 406,289.20 is: 608,716.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,518.80 : 742,403.40 = 406,289.20 : x
  2. Step 2: Convert to fraction form
    495,518.80/742,403.40 = 406,289.20/x
  3. Step 3: Cross multiply
    495,518.80x = 742,403.40 × 406,289.20
  4. Step 4: Simplify right side
    495,518.80x = 301,630,483,463.28
  5. Step 5: Solve for x
    x = 301,630,483,463.28/495,518.80
  6. Step 6: Final answer
    x = 608,716.53

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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.