Home / 711,139.02-1,066,709.58-290,414.91

Finding the Fourth Proportional to 711,139.02, 1,066,709.58 and 290,414.91

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Solution

The fourth proportional to 711,139.02, 1,066,709.58 and 290,414.91 is: 435,622.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,139.02 : 1,066,709.58 = 290,414.91 : x
  2. Step 2: Convert to fraction form
    711,139.02/1,066,709.58 = 290,414.91/x
  3. Step 3: Cross multiply
    711,139.02x = 1,066,709.58 × 290,414.91
  4. Step 4: Simplify right side
    711,139.02x = 309,788,366,671.84
  5. Step 5: Solve for x
    x = 309,788,366,671.84/711,139.02
  6. Step 6: Final answer
    x = 435,622.79

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1.5x scale

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.