Home / 519,220.10-778,830.15-239,284.10

Finding the Fourth Proportional to 519,220.10, 778,830.15 and 239,284.10

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Solution

The fourth proportional to 519,220.10, 778,830.15 and 239,284.10 is: 358,926.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,220.10 : 778,830.15 = 239,284.10 : x
  2. Step 2: Convert to fraction form
    519,220.10/778,830.15 = 239,284.10/x
  3. Step 3: Cross multiply
    519,220.10x = 778,830.15 × 239,284.10
  4. Step 4: Simplify right side
    519,220.10x = 186,361,671,495.62
  5. Step 5: Solve for x
    x = 186,361,671,495.62/519,220.10
  6. Step 6: Final answer
    x = 358,926.15

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.