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Finding the Fourth Proportional to 885,655.70, 1,328,483.55 and 353,258.90

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Solution

The fourth proportional to 885,655.70, 1,328,483.55 and 353,258.90 is: 529,888.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,655.70 : 1,328,483.55 = 353,258.90 : x
  2. Step 2: Convert to fraction form
    885,655.70/1,328,483.55 = 353,258.90/x
  3. Step 3: Cross multiply
    885,655.70x = 1,328,483.55 × 353,258.90
  4. Step 4: Simplify right side
    885,655.70x = 469,298,637,541.10
  5. Step 5: Solve for x
    x = 469,298,637,541.10/885,655.70
  6. Step 6: Final answer
    x = 529,888.35

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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.