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Finding the Fourth Proportional to 651,480.40, 977,220.60 and 314,779.60

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Solution

The fourth proportional to 651,480.40, 977,220.60 and 314,779.60 is: 472,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,480.40 : 977,220.60 = 314,779.60 : x
  2. Step 2: Convert to fraction form
    651,480.40/977,220.60 = 314,779.60/x
  3. Step 3: Cross multiply
    651,480.40x = 977,220.60 × 314,779.60
  4. Step 4: Simplify right side
    651,480.40x = 307,609,109,579.76
  5. Step 5: Solve for x
    x = 307,609,109,579.76/651,480.40
  6. Step 6: Final answer
    x = 472,169.40

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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.