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Finding the Fourth Proportional to 813,054, 1,122,014.52 and 455,358

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Solution

The fourth proportional to 813,054, 1,122,014.52 and 455,358 is: 628,394.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,054 : 1,122,014.52 = 455,358 : x
  2. Step 2: Convert to fraction form
    813,054/1,122,014.52 = 455,358/x
  3. Step 3: Cross multiply
    813,054x = 1,122,014.52 × 455,358
  4. Step 4: Simplify right side
    813,054x = 510,918,287,798.16
  5. Step 5: Solve for x
    x = 510,918,287,798.16/813,054
  6. Step 6: Final answer
    x = 628,394.04

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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.