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Finding the Fourth Proportional to 614,779.20, 848,378.40 and 342,855.36

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Solution

The fourth proportional to 614,779.20, 848,378.40 and 342,855.36 is: 473,130.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,779.20 : 848,378.40 = 342,855.36 : x
  2. Step 2: Convert to fraction form
    614,779.20/848,378.40 = 342,855.36/x
  3. Step 3: Cross multiply
    614,779.20x = 848,378.40 × 342,855.36
  4. Step 4: Simplify right side
    614,779.20x = 290,871,081,748.22
  5. Step 5: Solve for x
    x = 290,871,081,748.22/614,779.20
  6. Step 6: Final answer
    x = 473,130.97

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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.