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Finding the Fourth Proportional to 528,547.46, 729,400.85 and 286,832.12

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Solution

The fourth proportional to 528,547.46, 729,400.85 and 286,832.12 is: 395,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,547.46 : 729,400.85 = 286,832.12 : x
  2. Step 2: Convert to fraction form
    528,547.46/729,400.85 = 286,832.12/x
  3. Step 3: Cross multiply
    528,547.46x = 729,400.85 × 286,832.12
  4. Step 4: Simplify right side
    528,547.46x = 209,215,587,054.14
  5. Step 5: Solve for x
    x = 209,215,587,054.14/528,547.46
  6. Step 6: Final answer
    x = 395,831.23

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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.