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Finding the Fourth Proportional to 611,533.40, 917,300.10 and 424,909.40

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Solution

The fourth proportional to 611,533.40, 917,300.10 and 424,909.40 is: 637,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,533.40 : 917,300.10 = 424,909.40 : x
  2. Step 2: Convert to fraction form
    611,533.40/917,300.10 = 424,909.40/x
  3. Step 3: Cross multiply
    611,533.40x = 917,300.10 × 424,909.40
  4. Step 4: Simplify right side
    611,533.40x = 389,769,435,110.94
  5. Step 5: Solve for x
    x = 389,769,435,110.94/611,533.40
  6. Step 6: Final answer
    x = 637,364.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.