Home / 878,017.16-1,211,417.88-551,365.40

Finding the Fourth Proportional to 878,017.16, 1,211,417.88 and 551,365.40

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Solution

The fourth proportional to 878,017.16, 1,211,417.88 and 551,365.40 is: 760,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,017.16 : 1,211,417.88 = 551,365.40 : x
  2. Step 2: Convert to fraction form
    878,017.16/1,211,417.88 = 551,365.40/x
  3. Step 3: Cross multiply
    878,017.16x = 1,211,417.88 × 551,365.40
  4. Step 4: Simplify right side
    878,017.16x = 667,933,903,973.35
  5. Step 5: Solve for x
    x = 667,933,903,973.35/878,017.16
  6. Step 6: Final answer
    x = 760,729.90

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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.