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Finding the Fourth Proportional to 528,585.76, 729,448.72 and 286,868.26

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Solution

The fourth proportional to 528,585.76, 729,448.72 and 286,868.26 is: 395,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,585.76 : 729,448.72 = 286,868.26 : x
  2. Step 2: Convert to fraction form
    528,585.76/729,448.72 = 286,868.26/x
  3. Step 3: Cross multiply
    528,585.76x = 729,448.72 × 286,868.26
  4. Step 4: Simplify right side
    528,585.76x = 209,255,685,065.63
  5. Step 5: Solve for x
    x = 209,255,685,065.63/528,585.76
  6. Step 6: Final answer
    x = 395,878.40

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Double scale
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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.