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Finding the Fourth Proportional to 492,454.35, 738,681.53 and 430,246.35

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Solution

The fourth proportional to 492,454.35, 738,681.53 and 430,246.35 is: 645,369.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,454.35 : 738,681.53 = 430,246.35 : x
  2. Step 2: Convert to fraction form
    492,454.35/738,681.53 = 430,246.35/x
  3. Step 3: Cross multiply
    492,454.35x = 738,681.53 × 430,246.35
  4. Step 4: Simplify right side
    492,454.35x = 317,815,029,943.68
  5. Step 5: Solve for x
    x = 317,815,029,943.68/492,454.35
  6. Step 6: Final answer
    x = 645,369.53

Related Problems

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Half scale
Find fourth proportional to 984,908.70, 1,477,363.05 and 860,492.70
Double scale
Find fourth proportional to 492,455.35, 738,683.03 and 430,247.35
Similar ratio
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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.