Home / 387,934.16-535,685.52-286,136.04

Finding the Fourth Proportional to 387,934.16, 535,685.52 and 286,136.04

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Solution

The fourth proportional to 387,934.16, 535,685.52 and 286,136.04 is: 395,115.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,934.16 : 535,685.52 = 286,136.04 : x
  2. Step 2: Convert to fraction form
    387,934.16/535,685.52 = 286,136.04/x
  3. Step 3: Cross multiply
    387,934.16x = 535,685.52 × 286,136.04
  4. Step 4: Simplify right side
    387,934.16x = 153,278,933,378.14
  5. Step 5: Solve for x
    x = 153,278,933,378.14/387,934.16
  6. Step 6: Final answer
    x = 395,115.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.