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Finding the Fourth Proportional to 583,699.60, 805,503.72 and 315,427.60

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Solution

The fourth proportional to 583,699.60, 805,503.72 and 315,427.60 is: 435,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,699.60 : 805,503.72 = 315,427.60 : x
  2. Step 2: Convert to fraction form
    583,699.60/805,503.72 = 315,427.60/x
  3. Step 3: Cross multiply
    583,699.60x = 805,503.72 × 315,427.60
  4. Step 4: Simplify right side
    583,699.60x = 254,078,105,190.67
  5. Step 5: Solve for x
    x = 254,078,105,190.67/583,699.60
  6. Step 6: Final answer
    x = 435,289.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.