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Finding the Fourth Proportional to 630,539.69, 870,165.76 and 344,075.50

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Solution

The fourth proportional to 630,539.69, 870,165.76 and 344,075.50 is: 474,835.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,539.69 : 870,165.76 = 344,075.50 : x
  2. Step 2: Convert to fraction form
    630,539.69/870,165.76 = 344,075.50/x
  3. Step 3: Cross multiply
    630,539.69x = 870,165.76 × 344,075.50
  4. Step 4: Simplify right side
    630,539.69x = 299,402,714,604.05
  5. Step 5: Solve for x
    x = 299,402,714,604.05/630,539.69
  6. Step 6: Final answer
    x = 474,835.64

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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.