Finding the Fourth Proportional to 499,337.19, 688,275.61 and 390,248.87
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Solution
The fourth proportional to 499,337.19, 688,275.61 and 390,248.87 is: 537,910.61
Step by Step Solution
- Step 1: Write the proportion equation
499,337.19 : 688,275.61 = 390,248.87 : x - Step 2: Convert to fraction form
499,337.19/688,275.61 = 390,248.87/x - Step 3: Cross multiply
499,337.19x = 688,275.61 × 390,248.87 - Step 4: Simplify right side
499,337.19x = 268,598,774,634.06 - Step 5: Solve for x
x = 268,598,774,634.06/499,337.19 - Step 6: Final answer
x = 537,910.61
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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.