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Finding the Fourth Proportional to 615,064.32, 848,511 and 360,307.80

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Solution

The fourth proportional to 615,064.32, 848,511 and 360,307.80 is: 497,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,064.32 : 848,511 = 360,307.80 : x
  2. Step 2: Convert to fraction form
    615,064.32/848,511 = 360,307.80/x
  3. Step 3: Cross multiply
    615,064.32x = 848,511 × 360,307.80
  4. Step 4: Simplify right side
    615,064.32x = 305,725,131,685.80
  5. Step 5: Solve for x
    x = 305,725,131,685.80/615,064.32
  6. Step 6: Final answer
    x = 497,062.05

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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.