Home / 1,319,783.60-1,979,740.20-689,927.60

Finding the Fourth Proportional to 1,319,783.60, 1,979,740.20 and 689,927.60

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Solution

The fourth proportional to 1,319,783.60, 1,979,740.20 and 689,927.60 is: 1,034,925.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,783.60 : 1,979,740.20 = 689,927.60 : x
  2. Step 2: Convert to fraction form
    1,319,783.60/1,979,740.20 = 689,927.60/x
  3. Step 3: Cross multiply
    1,319,783.60x = 1,979,740.20 × 689,927.60
  4. Step 4: Simplify right side
    1,319,783.60x = 1,365,877,404,809.52
  5. Step 5: Solve for x
    x = 1,365,877,404,809.52/1,319,783.60
  6. Step 6: Final answer
    x = 1,034,925.27

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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.