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Finding the Fourth Proportional to 561,944.81, 774,966.38 and 368,281.98

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Solution

The fourth proportional to 561,944.81, 774,966.38 and 368,281.98 is: 507,890.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,944.81 : 774,966.38 = 368,281.98 : x
  2. Step 2: Convert to fraction form
    561,944.81/774,966.38 = 368,281.98/x
  3. Step 3: Cross multiply
    561,944.81x = 774,966.38 × 368,281.98
  4. Step 4: Simplify right side
    561,944.81x = 285,406,151,018.42
  5. Step 5: Solve for x
    x = 285,406,151,018.42/561,944.81
  6. Step 6: Final answer
    x = 507,890.01

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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.