Home / 1,128,000.90-1,556,630.55-618,705.30

Finding the Fourth Proportional to 1,128,000.90, 1,556,630.55 and 618,705.30

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Solution

The fourth proportional to 1,128,000.90, 1,556,630.55 and 618,705.30 is: 853,807.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,000.90 : 1,556,630.55 = 618,705.30 : x
  2. Step 2: Convert to fraction form
    1,128,000.90/1,556,630.55 = 618,705.30/x
  3. Step 3: Cross multiply
    1,128,000.90x = 1,556,630.55 × 618,705.30
  4. Step 4: Simplify right side
    1,128,000.90x = 963,095,571,426.92
  5. Step 5: Solve for x
    x = 963,095,571,426.92/1,128,000.90
  6. Step 6: Final answer
    x = 853,807.45

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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.