Home / 698,465.80-1,047,698.70-623,816.20

Finding the Fourth Proportional to 698,465.80, 1,047,698.70 and 623,816.20

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Solution

The fourth proportional to 698,465.80, 1,047,698.70 and 623,816.20 is: 935,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,465.80 : 1,047,698.70 = 623,816.20 : x
  2. Step 2: Convert to fraction form
    698,465.80/1,047,698.70 = 623,816.20/x
  3. Step 3: Cross multiply
    698,465.80x = 1,047,698.70 × 623,816.20
  4. Step 4: Simplify right side
    698,465.80x = 653,571,421,778.94
  5. Step 5: Solve for x
    x = 653,571,421,778.94/698,465.80
  6. Step 6: Final answer
    x = 935,724.30

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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.