Home / 758,913.60-1,138,807.80-285,938.40

Finding the Fourth Proportional to 758,913.60, 1,138,807.80 and 285,938.40

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Solution

The fourth proportional to 758,913.60, 1,138,807.80 and 285,938.40 is: 429,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,913.60 : 1,138,807.80 = 285,938.40 : x
  2. Step 2: Convert to fraction form
    758,913.60/1,138,807.80 = 285,938.40/x
  3. Step 3: Cross multiply
    758,913.60x = 1,138,807.80 × 285,938.40
  4. Step 4: Simplify right side
    758,913.60x = 325,628,880,239.52
  5. Step 5: Solve for x
    x = 325,628,880,239.52/758,913.60
  6. Step 6: Final answer
    x = 429,072.40

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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.