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Finding the Fourth Proportional to 525,802.20, 788,703.30 and 315,850.20

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Solution

The fourth proportional to 525,802.20, 788,703.30 and 315,850.20 is: 473,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,802.20 : 788,703.30 = 315,850.20 : x
  2. Step 2: Convert to fraction form
    525,802.20/788,703.30 = 315,850.20/x
  3. Step 3: Cross multiply
    525,802.20x = 788,703.30 × 315,850.20
  4. Step 4: Simplify right side
    525,802.20x = 249,112,095,045.66
  5. Step 5: Solve for x
    x = 249,112,095,045.66/525,802.20
  6. Step 6: Final answer
    x = 473,775.30

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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.