Home / 710,842.60-1,066,868.70-290,420.20

Finding the Fourth Proportional to 710,842.60, 1,066,868.70 and 290,420.20

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Solution

The fourth proportional to 710,842.60, 1,066,868.70 and 290,420.20 is: 435,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,842.60 : 1,066,868.70 = 290,420.20 : x
  2. Step 2: Convert to fraction form
    710,842.60/1,066,868.70 = 290,420.20/x
  3. Step 3: Cross multiply
    710,842.60x = 1,066,868.70 × 290,420.20
  4. Step 4: Simplify right side
    710,842.60x = 309,840,221,227.74
  5. Step 5: Solve for x
    x = 309,840,221,227.74/710,842.60
  6. Step 6: Final answer
    x = 435,877.40

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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.