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Finding the Fourth Proportional to 710,365.86, 980,308.32 and 388,081.32

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Solution

The fourth proportional to 710,365.86, 980,308.32 and 388,081.32 is: 535,554.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,365.86 : 980,308.32 = 388,081.32 : x
  2. Step 2: Convert to fraction form
    710,365.86/980,308.32 = 388,081.32/x
  3. Step 3: Cross multiply
    710,365.86x = 980,308.32 × 388,081.32
  4. Step 4: Simplify right side
    710,365.86x = 380,439,346,832.58
  5. Step 5: Solve for x
    x = 380,439,346,832.58/710,365.86
  6. Step 6: Final answer
    x = 535,554.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.