Home / 709,784.40-1,064,287.80-288,584.40

Finding the Fourth Proportional to 709,784.40, 1,064,287.80 and 288,584.40

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Solution

The fourth proportional to 709,784.40, 1,064,287.80 and 288,584.40 is: 432,718.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,784.40 : 1,064,287.80 = 288,584.40 : x
  2. Step 2: Convert to fraction form
    709,784.40/1,064,287.80 = 288,584.40/x
  3. Step 3: Cross multiply
    709,784.40x = 1,064,287.80 × 288,584.40
  4. Step 4: Simplify right side
    709,784.40x = 307,136,856,190.32
  5. Step 5: Solve for x
    x = 307,136,856,190.32/709,784.40
  6. Step 6: Final answer
    x = 432,718.52

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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.