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Finding the Fourth Proportional to 559,328.40, 837,024.30 and 390,054.60

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Solution

The fourth proportional to 559,328.40, 837,024.30 and 390,054.60 is: 583,709.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,328.40 : 837,024.30 = 390,054.60 : x
  2. Step 2: Convert to fraction form
    559,328.40/837,024.30 = 390,054.60/x
  3. Step 3: Cross multiply
    559,328.40x = 837,024.30 × 390,054.60
  4. Step 4: Simplify right side
    559,328.40x = 326,485,178,526.78
  5. Step 5: Solve for x
    x = 326,485,178,526.78/559,328.40
  6. Step 6: Final answer
    x = 583,709.28

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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.