Home / 987,739.60-1,363,080.78-535,030.60

Finding the Fourth Proportional to 987,739.60, 1,363,080.78 and 535,030.60

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Solution

The fourth proportional to 987,739.60, 1,363,080.78 and 535,030.60 is: 738,342.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,739.60 : 1,363,080.78 = 535,030.60 : x
  2. Step 2: Convert to fraction form
    987,739.60/1,363,080.78 = 535,030.60/x
  3. Step 3: Cross multiply
    987,739.60x = 1,363,080.78 × 535,030.60
  4. Step 4: Simplify right side
    987,739.60x = 729,289,927,571.87
  5. Step 5: Solve for x
    x = 729,289,927,571.87/987,739.60
  6. Step 6: Final answer
    x = 738,342.30

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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.