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Finding the Fourth Proportional to 423,547.34, 638,365.40 and 365,088.56

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Solution

The fourth proportional to 423,547.34, 638,365.40 and 365,088.56 is: 550,257.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,547.34 : 638,365.40 = 365,088.56 : x
  2. Step 2: Convert to fraction form
    423,547.34/638,365.40 = 365,088.56/x
  3. Step 3: Cross multiply
    423,547.34x = 638,365.40 × 365,088.56
  4. Step 4: Simplify right side
    423,547.34x = 233,059,904,639.82
  5. Step 5: Solve for x
    x = 233,059,904,639.82/423,547.34
  6. Step 6: Final answer
    x = 550,257.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.