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Finding the Fourth Proportional to 708,336.60, 977,530.90 and 402,464.84

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Solution

The fourth proportional to 708,336.60, 977,530.90 and 402,464.84 is: 555,416.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,336.60 : 977,530.90 = 402,464.84 : x
  2. Step 2: Convert to fraction form
    708,336.60/977,530.90 = 402,464.84/x
  3. Step 3: Cross multiply
    708,336.60x = 977,530.90 × 402,464.84
  4. Step 4: Simplify right side
    708,336.60x = 393,421,817,263.56
  5. Step 5: Solve for x
    x = 393,421,817,263.56/708,336.60
  6. Step 6: Final answer
    x = 555,416.47

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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.