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Finding the Fourth Proportional to 659,705.58, 910,395.47 and 357,899.58

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Solution

The fourth proportional to 659,705.58, 910,395.47 and 357,899.58 is: 493,902.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,705.58 : 910,395.47 = 357,899.58 : x
  2. Step 2: Convert to fraction form
    659,705.58/910,395.47 = 357,899.58/x
  3. Step 3: Cross multiply
    659,705.58x = 910,395.47 × 357,899.58
  4. Step 4: Simplify right side
    659,705.58x = 325,830,154,557.41
  5. Step 5: Solve for x
    x = 325,830,154,557.41/659,705.58
  6. Step 6: Final answer
    x = 493,902.38

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Double scale
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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.