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Finding the Fourth Proportional to 586,526.40, 809,415.84 and 318,254.40

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Solution

The fourth proportional to 586,526.40, 809,415.84 and 318,254.40 is: 439,196.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,526.40 : 809,415.84 = 318,254.40 : x
  2. Step 2: Convert to fraction form
    586,526.40/809,415.84 = 318,254.40/x
  3. Step 3: Cross multiply
    586,526.40x = 809,415.84 × 318,254.40
  4. Step 4: Simplify right side
    586,526.40x = 257,600,152,509.70
  5. Step 5: Solve for x
    x = 257,600,152,509.70/586,526.40
  6. Step 6: Final answer
    x = 439,196.18

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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.