Home / 988,875.60-1,483,313.40-420,109.80

Finding the Fourth Proportional to 988,875.60, 1,483,313.40 and 420,109.80

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Solution

The fourth proportional to 988,875.60, 1,483,313.40 and 420,109.80 is: 630,164.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,875.60 : 1,483,313.40 = 420,109.80 : x
  2. Step 2: Convert to fraction form
    988,875.60/1,483,313.40 = 420,109.80/x
  3. Step 3: Cross multiply
    988,875.60x = 1,483,313.40 × 420,109.80
  4. Step 4: Simplify right side
    988,875.60x = 623,154,495,811.32
  5. Step 5: Solve for x
    x = 623,154,495,811.32/988,875.60
  6. Step 6: Final answer
    x = 630,164.70

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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.