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Finding the Fourth Proportional to 660,005.55, 910,808.03 and 358,199.55

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Solution

The fourth proportional to 660,005.55, 910,808.03 and 358,199.55 is: 494,315.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,005.55 : 910,808.03 = 358,199.55 : x
  2. Step 2: Convert to fraction form
    660,005.55/910,808.03 = 358,199.55/x
  3. Step 3: Cross multiply
    660,005.55x = 910,808.03 × 358,199.55
  4. Step 4: Simplify right side
    660,005.55x = 326,251,026,482.39
  5. Step 5: Solve for x
    x = 326,251,026,482.39/660,005.55
  6. Step 6: Final answer
    x = 494,315.58

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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.